Building Types

Steel Building Types

Every steel building is made up of the same basic components. We will show you how these components fit together and explain how everything works. Download our trim catalog or steel building catalog to view more options or visit one of our locations to have your questions answered.

  1. Endwall Columns: These are found at either end of the building and are the primary support structures for the endwalls, and in some case the entire building. Depending on the width of the building, there may be several columns.

  2. Endwall Rafters: Like the endwall columns, they are found at either end of the building, providing support for the roof.

  3. Endwall Girts: Endwall girts are placed along the endwall and bolted to the endwall columns. They provide extra support for the endwalls and are located where you attach the endwall panels.

  4. Sidewall Girts: They function the same as the endwall girts, only they tie to endwall columns and rigid frames (if present), and help support the sidewall and the sidewall panels.

  5. Eave Strut: Two eave struts run the length of the building on either side. They provide a surface to which you can attach trim, and are the final screw-down spot for all roofing panels.

  6. Roof Purlins: The roof purlins help give strength to the roof, and provide a surface to which the roof panels can be attached.

  7. Cable Bracing: Once every 100 feet or so, cable bracing has to be inserted into a bay to help give extra strength to the building. In a small building like this, there is only one bay, so the bracing has to go in that one bay. In larger buildings, there are multiple bays, and the bracing can be put anywhere.

  8. Peak Sheet / Ridge Roll: This trim is found at the peak of the building and is used to seal the joint where the two sets of roof panels meet.

  9. Rake Trim: Rake trim is found at either end of the building and is used to seal the joint where the roof meets the endwall.

  10. Corner Trim: Corner trim is found at the corners and is used to seal the endwall/sidewall joints.

  • Rigid Frame (not pictured): Rigid frames are found in buildings longer than 25 feet. Long buildings must have structural support throughout the center of them. Rigid Frames consist of two columns on either side supporting the rafters. Frames are spaced 20 to 25 feet apart and are attached to the foundation using bolts. Wall girts and roof purlins are attached to the rigid frames.
  • Eave Trim (not pictured): This building has an eave overhang so trim is not necessary. However, if your roof panels end flush with the sidewall, you need eave trim to seal that joint.
  • Gutters (not pictured): On a building requiring eave trim, gutters can be used to not only seal the joint, but also to control the water off of the roof.
Why leave your car or truck exposed to the elements? Mueller’s easy-to-assemble carports do a great job of protecting your vehicles. Choose from one- or two-car sizes, plus add an optional trim package for a sleek look.

Available Carport Sizes:


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Mueller does not represent these Carports to meet any specific code or engineering criteria. Please check local building codes before ordering.

Let the skilled engineers at Mueller create a customized building just for you. Our manufacturing team will produce it to your exact specifications. These buildings open up so many options, including the building size, roof type, colors and accessories. Since we perform all engineering and manufacturing in-house, you know you're getting the best efficiency and value. Questions? Call us now at 877-2-MUELLER.


Please check local building codes before ordering.

This is the simple and affordable way to indulge your love for flowers and plants. The kit features a sturdy metal frame by Mueller, plus high-performance polycarbonate panels that are virtually unbreakable. Designed for easy assembly.

Available Greenhouse Kit Sizes:

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These greenhouses are not engineered. Please check local building codes before ordering.


Mueller's Standard Series is the finest pre-designed steel building around. Built of heavy structural steel, these buildings set new benchmarks for quality, ease of assembly and flexibility. They make outstanding workshops, garages, barns and large storage spaces. Available in a variety of sizes, they can be assembled with bolts and screws, with no welding. You can pick them up at any Mueller branch or, for a small fee, have them delivered to your site.

Available Standard Series Sizes (IBC 12)

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Standard Series Warranty

MUELLER, INC. GENERAL PREFABRICATED BUILDING WARRANTY

Scope and Remedy. Products which have been fabricated by Mueller, Inc. shall be free of defects in material and workmanship for a period of one year after shipment. Mueller, Inc. sole responsibility for any such defects shall rest at Mueller, Inc.'s discretion to replacement of the defective material at the original point of delivery or reimbursement for the price paid by the customer for the defective material.

Notification. Buyer must notify Mueller, Inc. of defective material within 30 days of receipt of the material. Mueller, Inc. shall investigate and make a determination of coverage under this warranty. If materials are deemed defective per generally accepted industry standards, Mueller, Inc. will provide one of the aforementioned remedies within 90 days from the date notice of defect is provided to Mueller, Inc.

Exceptions. Specific written surface and coating warrantees provided on roofing and wall panels. Materials sold without warranties such as rejects, secondary, #2 or bargain are excluded from this warranty.

EXCEPTING THOSE WARRANTIES ISSUED IN WRITING AND CONTEMPORANEOUSLY WITH THIS WARRANTY, MUELLER, INC. MAKES NO OTHER WARRANTY, EXPRESSED OR IMPLIED, AND HEREBY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE; PROVIDED HOWEVER THAT ANY IMPLIED WARRANTY OF MERCHANTIBILITY OR FITNESS FOR A PARTICULAR PURPOSE, IF ANY, THAT BY LAW MIGHT ACCOMPANY THIS PRODUCT BY VIRTUE OF PERSONAL, FAMILY, OR HOUSEHOLD USE THEREOF, IS HEREBY EXPRESSLY LIMITED IN DURATION TO A PERIOD OF ONE YEAR FROM DATE OF DELIVERY.

Customer's acceptance of the material or products subject to this warranty represents acceptance of the terms and conditions of this warranty.

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Please check local building codes before ordering.